That is a correct link. However when one of the other new comments is on another page or the first page of that particular article, the link still points tot page-4. The comment number is correct, the pagenumber not, resulting in a faulty link, e.g.

So, the page number of the first new comment page is retained in all subsequent new comment links.

This also happens when I use the standard wordpress new comments widget. So it seems either to be a problem in WP (I'm using 2.9) or maybe in Greg's Threaded Comment Numbering plug-in which I also use. Or is it a problem in Atahualpa? Or is there an error in my configuration of the theme?